Accession Number:

ADA350592

Title:

Adsorption Isotherms: North Caroline Apatite Induced Precipitation of Lead, Zinc, Manganese, and Cadmium from the Bunker Hill 4000 Soil

Descriptive Note:

Technical rept. May 95

Corporate Author:

BECHTEL HANFORD INC RICHLAND WA

Personal Author(s):

Report Date:

1995-05-01

Pagination or Media Count:

27.0

Abstract:

Adsorption isotherm experiments using varying amounts of different apatites and a 101 water-to-soil ratio were used in combination with a thermodynamic model to determine the amount of apatite necessary to treat a given soil. These experiments suggest that soils may be remediated by extrapolating from the isotherm experiments. Given that a ton of soil has a mass of 9.07 x 10exp 2 kg, and that, from this study, most metal precipitation occurs at 1 or less added NC apatite, remediation of a ton of contaminated soil would require 10 kg of NC apatite. Considering the shipping and material cost of the NC apatite, this remediation would be 5.49 per treated ton of soil. By comparison, grouting techniques can required as much as 30 to 50 by weight, depending on the porosity of the soil.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Solid Wastes and Pollution and Control
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE